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I've been reading on producer theory and came up with a ridiculous question. Has anyone tried to model costs with a trigonometric function? would it work with the assumptions we need? Thanks!

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  • $\begingroup$ "would it work with the assumptions we need?" What exactly are this needed assumptions? $\endgroup$
    – Giskard
    May 14 at 17:24
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There is a long tradition of using flexible functional forms for cost, utility or production functions. This can be done using a (low) order series expansion. Usually, these are Taylor expansions. For example the translog is a second order polynomial in log prices.

Of course, one could also use a Fourier expansion, which would give a function in terms of cosine and sine functions.

See for example the appendix of Griffin, Montgomery, Rister,(1987) "Selecting Functional Form In Production Function Analysis," Western Journal of Agricultural Economics

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